MCAT Organic Chemistry Question 162: Answer and Explanation
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Question: 162
12. Two enantiomers will:
- A. have identical IR spectra because they have the same functional groups.
- B. have identical IR spectra because they have the same specific rotation.
- C. have different IR spectra because they are structurally different.
- D. have different IR spectra because they have different specific rotations.
Correct Answer: A
Explanation:
Enantiomers will have identical IR spectra because they have the same functional groups and will therefore have the exact same absorption frequencies. Enantiomers have opposite specific rotations, but specific rotation actually has no effect on the IR spectrum.